The best book is one that offers 1st quarter lines, 1st half lines, 2nd half lines, game lines at reduced juice, and one that pays.
You should have 2 to 3 different outs when line shopping.
Pinnacle, Hollywood, CRIS (no reduced juice), Olympic (no reduced juice) are a few that I would consider.
CRIS and OLYMPIC are not scared to post their early numbers. Pinnacle is probably going to be your best bet, as Hollywood, if they are anything like they are in college football, is scared to hang a half-time line on many games.
Chalk